Homework Help: maths

Posted by courtney on Tuesday, September 8, 2009 at 1:38pm.

1. Q: 2|3x-5| when x=(-3)
A: 24

2. Q: |6-x|+4 when x=5
A: 5
_______________

Simplify the expression.
1. (-4)(-x)(x^2)
my answer: 4x^3

2. (24)(-5x)(-x)
my answer: 120x^2

3. -x(4-x)
my answer: -4x-x

4. -4t(t+2)
my answer: -4t^2+(-6t)

5. b^2(4-b^2)
my answer: 4b^2-b^4

6. (c+3c^2)(-c^2)
my answer: -c^3+(-3c^4)

Can you check and see if my answers are right? Any help is appreciated.

maths - bobpursley, Tuesday, September 8, 2009 at 2:34pm
redo the first one.
then 3,4 are wrong.
maths - courtney, Tuesday, September 8, 2009 at 2:51pm
3. -4x-x^2
4. -4t^2+(-8t)

please check those again.

and when you say redo number 1, which one do you mean:
a. 2|3x-5| when x=(-3)
or
b. (-4)(-x)(x^2)

thanks!! :)
maths - bobpursley, Tuesday, September 8, 2009 at 3:09pm
The first one?1. Q: 2|3x-5| when x=(-3)
A: 24

Answer this Question

Related Questions

calc - 6(4x+3)^5(4)(3x-5)^5+ 5(3x-5)^4(3)(4X+3)^6 common factors: (4x+3)^5 (3x-5...
algebra - simplify (6x^3-16x^2+11x-5)/(3x-2) (3x-2)(2x-1)^2-3 my muliple choice ...
algebra - factor the expression 4xsquared+35x+24 my answer: (4x+3)(x-8) 4x2 +35x...
Math - Consider the equation below. 1/5(x+2)+2x = 6x-10 Part A: Which property ...
bobpursley,math - about this problem , I figured it out and i did get the answer...
math - which expression is equivalent to 3/4x-24. It imultiple choice a 1/4(3x-...
math - which expression is equivalent to 3/4x-24. It imultiple choice a 1/4(3x-...
Math- please help - which expression is equivalent to 3/4x-24. It is a multiple ...
Urgent Math please check - Very Important I can get someone to check these for ...
Polynomial- Doublecheck2 - I asked this earlier, but I didn't get an answer...

For Further Reading

First Name:
School Subject:
Answer: